The heir to the throne ignored inquiries from a reporter during a visit to Cardiff.
Charles, 72, had engagements in South Wales a day after Harry dropped his latest bombshell by criticising his father, and the way he in turn was brought up by the Queen and Prince Philip.
Aides made it clear before he arrived at his first engagement that he would not be answering questions about his parenting skills.
It came during a visit to BCB International, which makes survival gear and other protective, medical and defence equipment.
As dysfunction among the royals was being discussed in the media, the heir to the throne found not all family firms are quite so strife-riven.
He was welcomed by managing director Andrew Howell, whose wife Janey and daughters Emily, 28, Gabriella, 26, and Isabella, 23, hold senior positions in the company, which employs 80.
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